Two Pack Five Millimeter To Eight Millimeter Shaft Coupling Aluminum Twenty Five Millimeter Long Twenty Millimeter Outer Diameter Flexible Leadscrew Coupler For 3D Printer Stepper Motor CR10 CR10S Ender 3 A8 A6 E10 E12 U10

Two-Pack 5mm-8mm Shaft Couplers, 25mm Aluminum
✔️ Aluminum 25mm long, 20mm OD, fits 5-8mm shafts, 2-pack

This aluminum leadscrew/stepper motor coupling is built to join a 5mm motor shaft to an 8mm leadscrew, delivering a sturdy, compact link for 3D printers and small CNC rigs.

✅ L = 25mm; D = 20mm; d1 = 5mm; d2 = 8mm
✅ Color: Black, material: Aluminum
✅ Pack: 2 pieces

💡 What is a shaft coupling used for in a 3D printer and similar gear setups? A handy connector that links motor shafts to leadscrews, allowing smooth transmission of motion even when shafts aren’t perfectly aligned. - handy for joining 5mm to 8mm shafts in a compact 25mm aluminum body - reduces backlash and improves positional accuracy in motion systems - ideal for CR-10, Ender, A-series printers and similar builds